Expansible bung-plug.



E. J. TAGKNEY.

EXPANSIBLB BUNG PLUG.

APPLICATION FILED JUNE 21, 1913.

1,109,262, Patented Sept. 1, 1914.

WITNESSES IHVEMTDR Q QJNW 69m 323W ya/W @XWM THE NORRIS PETERS CO. PHGTO-LITHQ WASHINGTUN. D. C.

ITED sTATEsPATENT OFF ICE- EDWARD J. rncxnnx'or nn'rnorr, MICHIGAN, Assiorivon or oNE-riAicF T WIEDEMAN, or nn'rnoxnuuronrenn. p y

EXPANSIBLE BUNG-PLUG.

Specification of Letters Patent. 7

Application filed June 21, 1913., seria1 no. 774,9eo.

Improvement in Expansible Bung-lugs,'

and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to expansible bungplugs, and has for its object a metal bung,- plug which is capable of lateral expansion by driving a wedging in into the plug. 1

In the drawings Figure 1 is a section of the bung-plug halved to show one part in one position and the otherpart in another position. Fig. 2 is a section on the line BB of Fig. 1. The line A-A on this figure shows the section line upon which Fig. 1 is taken. Fig.8 is a perspective of the lower portion of the structure shown in Fig. 1. Fig. 4 is a perspective of one of the eXpanders or segments.

A portion of the side of the barrel is indicated by a. b designates the bunghole. The plug comprises a body portion 0 which has a central recess (Z which is cylindrical. The body portion is really divided into two annular members, the outside member 6 and the inside member f. The inside annular portion is shown in perspective in Fig. '3. These two body portions are connected by posts 9 which are integral portions of each member. These posts are in reality a reduced portion of the body which is squared, and they are pierced on each side by circular holes 72.. Into each of these holes protrudes the neck 2' of an expander or segment j. One

of these segments is shown in Fig. 4. Each of these segments is substantially onequarter of a circle. The end of each neck portion has a protruding rounded-off surface giving it somewhat of a ball-like appearance. A wedging pin is can be reciprocated within given limits in the recess (Z of the body member. The right portion in Fig. 1 shows the position of the parts before the wedging pin has been driven in. It will be noted that one end of the pin is of reduced diameter as at Z. This allows the rounded-off neck ends of the expanders to lie against the wedging pin so as to reduce the outer periphery. of theplug, In v this condition the, plug is not expanded, but may be easily withdrawn from the bunghole.

In the 'position of the wedging pin is, shown in the left half of Fig. 1, the expander members have been forced outward Patented sent: 1, 1 14.

by driving the wedging pin into the plug.

The rubber gasket m which fits over the segments is thereby forced into close contact with the bunghole walls and securely packs the bunghole and the bung-plug to prevent seepage. It also holds the bungplug securely in the bunghole. This rubber gasket not only fits around the expanders but also on the inner side of the flange n, which holdsthe expanders. The casing portion which forms the central recess (Z is screw threaded on its exterior, and upon this runs a am-nut 0 which holds the gasket m in place. The top of the wedging pin is has a rim 3) under which a tool may be inserted to pry the wedging pin out when it is desired to remove the bung-plug.

The rounded-olf neck ends of the expanders avoid a great deal of friction, while the use of segmental expanders se-- cures a positive action for the rubber gasket throughout practically all points of the circle. Practically every point is subjected to an expanding force. The sides of the expanders are beveled off as at 1, so that the divisions in the circle of expanders are oblique rather than perpendicular.

What I claim is: I 1. A bung-plug, having in combination a body comprising an inner and an outer portion connected by posts and having a central recess or socket, a'plurality of segmental pieces having neck portions protruding between said. posts, and .a wedging pin adapted to be driven into said recess or socket to expand the segmental pieces, substant-ially as described.

2. A bung-plug, having in combination a body member provided with a central re cess or socket and comprising an outer por tion and an lnner portlon connected by posts, a plurality of segments having neck o are oblique, and a wedging pin adapted to central recess or socket to expand the seg- I be driven into the central recess or socket ments against the gasket, substantially as to expand the segments, substantially as described. p described.

3. A bung-plug, having in combination a In testimony whereof, I sign this speci- 5 body provided with a central recess or fication in the presence of two witnesses.

socket, a plurality of segments adapted to move radially with respect to said body, said segments provided with beveled sides so that the divisions between the segments EDWARD J. TAOKNEY.

Witnesses:

STUART C. BARNES, l AMELIA G. KOEHN.

Copies of this patent may be obtained for five cents each, by addressing the- Commissioner of Patents,

' Washington, I). C. 

